There are at least two places (fredi.de and gmane.org) that offer a
web-based archive of this list, so any regular web address harvester
will be able to grab addresses. For GMANE, you can include an X-Archive:
encrypt header to have your sender address obfuscated, but I'm not aware
of such obfuscation for fredi's list:
http://www.fredi.de/maillist/msg00130.html

I contacted the developer (Earl Hood) of the archive-software for
a solution for this Problem.
I think to change the @-character to <at> will help.